Calculate the number 3840
[7018] Calculate the number 3840 - NUMBERMANIA: Calculate the number 3840 using numbers [9, 5, 8, 4, 58, 685] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 9 - The first user who solved this task is Nasrin 24 T
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Calculate the number 3840

NUMBERMANIA: Calculate the number 3840 using numbers [9, 5, 8, 4, 58, 685] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 9
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #numbermania
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Upon reaching 65, old Tom deci...

Upon reaching 65, old Tom decided to retire. His wife suggested he go and do something to occupy his time, like join a club or get a hobby
Old Tom obliged and went out for a couple of hours. When he got home his wife asked about his day and he replied, "Oh, I joined a parachute club."
"What? Are you nuts? You're 65 years old and you're going to start jumping out of airplanes?"
"Yeah, look I even got a membership card."
"Old man, you need glasses! This is a membership in a Prostitute Club, not a Parachute Club!"
"Oh, great! Now what am I going to do? I signed up for 5 jumps a week!"
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Centre-pivot irrigator

In 1952, a U.S. patent for a "Self-Propelled Sprinkling Irrigating Apparatus" was issued to Frank L. Zybach of Strasburg, Colorado (No. 2,604,359). A centre-pivoted pipe supported on a series of water-piston-powered wheels rotates and sprinkles water on the crops.A control system ensures that each wheel advances at the correct rate. This is the now-familiar centre-pivot machine that waters large circles of crops in those areas of a country which have limited rainfall but have a supply of surface or well water. It provides irrigation for large areas of even closely-spaced crops for which irrigation ditches are not practical and wasteful of water, or that would be expensive to supply with full coverage with stationary sprinklers.«[Image: a modern example showing the sprinkler pipe carried above a series of large wheels.]
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